Testing for pair-density-wave order in La${}_{1.875}$Ba${}_{0.125}$CuO${}_4$

Abstract

Charge order is commonly believed to compete with superconducting order. An intertwined form of superconducting wave function, known as pair-density-wave (PDW) order, has been proposed; however, there has been no direct evidence, theoretical or experimental, that it forms the ground state of any cuprate superconductor. As a test case, we consider \lbco\ with $x=1/8$, where charge and spin stripe orders within the CuO${}_2$ planes compete with three-dimensional superconducting order. We report measurements of the superconducting critical current perpendicular to the planes in the presence of an in-plane magnetic field. The variation of the critical current with orientation of the field is inconsistent with a theoretical prediction specific to the PDW model. It appears, instead, that the orientation dependence of the critical-current density might be determined by a minority phase of $d$-wave superconductivity that is present as a consequence of doped-charge inhomogeneity.

6 pages, 2 figures, Major changes from previous version

References in corpus (10)

• Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3Oy
• Theory of Intertwined Orders in High Temperature Superconductors
• Two-Dimensional Superconducting Fluctuations in Stripe-Ordered La(1.875)Ba(0.125)CuO(4)
• Dynamical layer decoupling in a stripe-ordered, high T_c superconductor
• Evidence for unusual superconducting correlations coexisting with stripe order in La(1.875)Ba(0.125)CuO(4)
• Ground State Phase Diagram of the $t$-$t^{\prime }$-$J$ model
• Visualizing the Energy-gap Modulations of the Cuprate Pair Density Wave State
• Cuprate superconductors as viewed through a striped lens
• Charge ordering in superconducting copper oxides
• Charge Order and Superconductivity as Competing Brothers in Cuprate High-$T_{\mathrm{c}}$ Superconductors

Cited by in corpus (9)

• Pair density wave in doped three-band Hubbard model on two-leg square cylinders
• Striped electronic phases in an incommensurately modulated van der Waals superlattice
• Pair density wave characterized by a hidden string order parameter
• Strong pair-density-wave fluctuations in an exactly solvable doped Mott insulator
• Gradual emergence of superconductivity in underdoped LSCO
• Pair-density-wave phase of strongly interacting electrons on the triangular lattice: A variational Monte Carlo study
• Two types of superconducting pairs in stripe-ordered La${}_{2-x}$Ba${}_x$CuO${}_4$ ($x=1/8$): evidence from the resistivity measurements
• Observation of Subharmonic Charge-Density-Wave Correlations in La-Based Cuprates
• Pair density wave solution for a self-consistent model